mcs/class/corlib/Mono.Security.X509/X509Extensions.cs

   1 //
   2 // X509Extensions.cs: Handles X.509 extensions.
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
   8 // (C) 2004 Novell (http://www.novell.com)
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System;
  35 using System.Collections;
  36
  37 using Mono.Security;
  38
  39 namespace Mono.Security.X509 {
  40         /*
  41          * Extensions  ::=  SEQUENCE SIZE (1..MAX) OF Extension
  42          *
  43          * Note: 1..MAX -> There shouldn't be 0 Extensions in the ASN1 structure
  44          */
  45 #if INSIDE_CORLIB
  46         internal
  47 #else
  48         public
  49 #endif
  50         sealed class X509ExtensionCollection : CollectionBase, IEnumerable {
  51
  52                 private bool readOnly;
  53
  54                 public X509ExtensionCollection () : base ()
  55                 {
  56                 }
  57
  58                 public X509ExtensionCollection (ASN1 asn1) : this ()
  59                 {
  60                         readOnly = true;
  61                         if (asn1 == null)
  62                                 return;
  63                         if (asn1.Tag != 0x30)
  64                                 throw new Exception ("Invalid extensions format");
  65                         for (int i=0; i < asn1.Count; i++) {
  66                                 X509Extension extension = new X509Extension (asn1 [i]);
  67                                 InnerList.Add (extension);
  68                         }
  69                 }
  70
  71                 public int Add (X509Extension extension)
  72                 {
  73                         if (extension == null)
  74                                 throw new ArgumentNullException ("extension");
  75                         if (readOnly)
  76                                 throw new NotSupportedException ("Extensions are read only");
  77
  78                         return InnerList.Add (extension);
  79                 }
  80
  81                 public void AddRange (X509Extension[] extension)
  82                 {
  83                         if (extension == null)
  84                                 throw new ArgumentNullException ("extension");
  85                         if (readOnly)
  86                                 throw new NotSupportedException ("Extensions are read only");
  87
  88                         for (int i = 0; i < extension.Length; i++)
  89                                 InnerList.Add (extension [i]);
  90                 }
  91
  92                 public void AddRange (X509ExtensionCollection collection)
  93                 {
  94                         if (collection == null)
  95                                 throw new ArgumentNullException ("collection");
  96                         if (readOnly)
  97                                 throw new NotSupportedException ("Extensions are read only");
  98
  99                         for (int i = 0; i < collection.InnerList.Count; i++)
 100                                 InnerList.Add (collection [i]);
 101                 }
 102
 103                 public bool Contains (X509Extension extension)
 104                 {
 105                         return (IndexOf (extension) != -1);
 106                 }
 107
 108                 public bool Contains (string oid)
 109                 {
 110                         return (IndexOf (oid) != -1);
 111                 }
 112
 113                 public void CopyTo (X509Extension[] extensions, int index)
 114                 {
 115                         if (extensions == null)
 116                                 throw new ArgumentNullException ("extensions");
 117
 118                         InnerList.CopyTo (extensions, index);
 119                 }
 120
 121                 public int IndexOf (X509Extension extension)
 122                 {
 123                         if (extension == null)
 124                                 throw new ArgumentNullException ("extension");
 125
 126                         for (int i=0; i < InnerList.Count; i++) {
 127                                 X509Extension ex = (X509Extension) InnerList [i];
 128                                 if (ex.Equals (extension))
 129                                         return i;
 130                         }
 131                         return -1;
 132                 }
 133
 134                 public int IndexOf (string oid)
 135                 {
 136                         if (oid == null)
 137                                 throw new ArgumentNullException ("oid");
 138
 139                         for (int i=0; i < InnerList.Count; i++) {
 140                                 X509Extension ex = (X509Extension) InnerList [i];
 141                                 if (ex.Oid == oid)
 142                                         return i;
 143                         }
 144                         return -1;
 145                 }
 146
 147                 public void Insert (int index, X509Extension extension)
 148                 {
 149                         if (extension == null)
 150                                 throw new ArgumentNullException ("extension");
 151
 152                         InnerList.Insert (index, extension);
 153                 }
 154
 155                 public void Remove (X509Extension extension)
 156                 {
 157                         if (extension == null)
 158                                 throw new ArgumentNullException ("extension");
 159
 160                         InnerList.Remove (extension);
 161                 }
 162
 163                 public void Remove (string oid)
 164                 {
 165                         if (oid == null)
 166                                 throw new ArgumentNullException ("oid");
 167
 168                         int index = IndexOf (oid);
 169                         if (index != -1)
 170                                 InnerList.RemoveAt (index);
 171                 }
 172
 173                 IEnumerator IEnumerable.GetEnumerator ()
 174                 {
 175                         return InnerList.GetEnumerator ();
 176                 }
 177
 178                 public X509Extension this [int index] {
 179                         get { return (X509Extension) InnerList [index]; }
 180                 }
 181
 182                 public X509Extension this [string oid] {
 183                         get {
 184                                 int index = IndexOf (oid);
 185                                 if (index == -1)
 186                                         return null;
 187                                 return (X509Extension) InnerList [index];
 188                         }
 189                 }
 190
 191                 public byte[] GetBytes ()
 192                 {
 193                         if (InnerList.Count < 1)
 194                                 return null;
 195                         ASN1 sequence = new ASN1 (0x30);
 196                         for (int i=0; i < InnerList.Count; i++) {
 197                                 X509Extension x = (X509Extension) InnerList [i];
 198                                 sequence.Add (x.ASN1);
 199                         }
 200                         return sequence.GetBytes ();
 201                 }
 202         }
 203 }